Editor's Note: This growing directory is manually maintained and automatically tested for broken links once a month. Links which appear broken for three or more consecutive months are deleted.

Should there be anything wrong with an entry, let me know and I will be glad to correct it.
Note: an entry can appear in several categories.

• AMI. Academy of Molecular Imaging.
• AGNMR. Austrian NMR Discussion Group.
• ANZMAG. Australian and New Zealand Society for Magnetic Resonance.
• AMMRL. Association of Managers of Magnetic Resonance Laboratories.
  Their meetings are usually associated with other events, such as ENC.
• AMPERE Groupement, a European association active in NMR, MRI, Optics and Dielectrics, organizes a wide range of events (see their future conferences page).
• APES. Asia-Pacific EPR/ESR Society.
• APNMR. Asia-Pacific NMR Society.
• ARPE. Association Francaise de Resonance Paramagnetique Electronique.
  (French ESR Association).
• AUREMN. The Brazilian Assoçiacão de Usuários de Ressonância Magnética Nuclear
  (Brasilian Association of NMR Users).
• BRSG: the Magnetic Resonance Group of the British Institute of Physics.
  BRSG stands for British Radio-Spectroscopy Group, (UK).
• CMRS. Clinical Magnetic Resonance Society.
• ECSBM. European Conference on the Spectroscopy of Biological Molecules,
  with a prominent NMR and ESR section (see Topics).
• ESR. European Society of Radiology (includes MRI). Home of European Congress of Radiology.
• EFEPR, European Federation of ESR Groups.
• EMRF, European Magnetic Resonance Forum.
• ENC, Experimental NMR Conference.
• ESMRMB, European Society for Magnetic Resonance in Medicine and Biology.
• ESR Group of RSC, Electron Spin Resonance Group of the Royal Society of Chemistry (UK).
• EUROMAR, organizer of the largest European NMR, MRI & EPR meetings.
• Fédération RMN Solide à Hauts Champs FR2950/CNRS, France.
• FGMR, Fachgruppe Magnetische Resonanzspektroskopie of GDCh (German NMR & ESR group).
• GERM, Groupement français d'Etudes de Résonance Magnétique.
• GERMN, Spanish Grupo Especializado de Resonancia Magnética Nuclear of the RSEQ (Royal Spanish Chemistry Society).
• GIDRM, Gruppo Italiano di Risonanza Magnetica.
• GIRM, Gruppo Interdivisionale di Risonanze Magnetiche within SCI (Società di Chimica Italiana).
• GIRSE. Gruppo Italiano di Risonanza di Spin Elettronico. (Italian ESR Association).
• ICMRBS, International Conferences on Magnetic Resonance in Biological Systems.
• IEPRS, International EPR (ESR) Society.
• ISMAR, International Society of Magnetic Resonance.
• ISMRM, International Society of Magnetic Resonance in Medicine.
  Organizes many workshops (see their home page).
• IMRSER, Institute for Magnetic Resonance Safety, Education and Research.
  This is not an association, but I think that it is important. See their excellent MRI safety pages.
• JSMRM, Japanese Society for Magnetic Resonance in Medicine.
• Magnetic Resonance Society of Taiwan.
• MRPM, Magnetic Resonance in Porous Media.
• NAMIC, National Alliance for Medical Image Computing.
• NJ-ACS NMR Spectroscopy Group in North Jersey, USA.
• NMRDG, the UK NMR Discussion Group
• NMRDG. Dutch NMR Discussion Group.
• NMRS. National Magnetic Resonance Society of India.
• NMR Society of Japan.
• NSMR, the Norwegian Society of Magnetic Resonance.
• OCMRA, the Overseas Chinese Magnetic Resonance Association.
• PITTCON, the Pittsburg Conference.
• PTNMR, the Portuguese NMR Network.
• RCN-SCN, a Research Coordination Network for
  Emerging Methodologies for Molecular Structure Determination in Biological Solids.
  An NSF excellence program originated in New York City.
• RMN Structurale Grand Bassin Parisien, France.
• Russian EPR Society. A nice site with many links.
• SCMR, the Society for Cardiovascular Magnetic Resonance.
• SEST, Japanese Society of Electron Spin Science and Technology,
• SFRBM, the Society for Free Radical Biology and Medicine. Strong ESR interests.
• SMI Society for Molecular Imaging.
• SMRT Section for Magnetic Resonance Technologists of ISMRM.